Recent content by icekin

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    Resistance of wire changes between tests?

    I've decided to try some further tests with the faulty and a brand new wire. Procedure as follows: For each wire, Step 1. Measure resistance on 3M Step 2. Measure resistance on 601 at 1A Step 3. Measure resistance on 601 at 10A Step 4. Measure resistance on 601 at 1A Step 5. Measure resistance...
  2. I

    Resistance of wire changes between tests?

    This is correct if we assume that the measured resistance is correct. At the moment, due to the discrepancies between the 601 and the 3M, I am not even sure if the test equipment is correct. I thought calculating using the thickness, length and resistivity would be more foolproof in this case.
  3. I

    Resistance of wire changes between tests?

    The actual power dissipated would only be around 2W at best. The green Earth wire in the power cord is only about 2mm thick approximately. Cross sectional area would then be 3.14 x 10^-6 square metres. Taking the resistivity of standard copper, the resistance comes to 0.0161 ohms. Power =...
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    Resistance of wire changes between tests?

    I've got a power cord on which I am testing the resistance of the Earth wire. I've used 2 different test machines, a MEM ELEC-3M and a Bio-Tek 601 Pro. The 601 can use 2 different test currents, 10A and 1A. The 3M uses only 1 test current, which is slightly less than 1A. The minimum standard...
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